# The Motor Vehicles (Driving Licences) Regulations 1999, Paragraph 1


Indicate intended actions at appropriate times by giving appropriate signals in a clear and unmistakable manner.
In the case of a test taken on a vehicle with a left-hand drive or by a disabled person for whom it is impracticable or undesirable to give signals by arm, there shall be no requirement to give signals which cannot be given by mechanical means.

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Source: https://www.legislation.gov.uk/uksi/1999/2864/schedule/8/paragraph/1n22 (the official version)
Page: https://openlegislation.uk/motor-vehicles-driving-licences-regulations-1999/schedule-8/paragraph-1n22
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.